Portable reel gas-oven.



G. B. MEEK. v PORTABLE REEL GAS OVEN.

APPLICATION FILED 'APB.22,19 08.

Patentd Dec. 8

4 SHEETS-SHEET 1.

INESSb I A7TOHNEYS G.- B. MEEK.

I PORTABLE REEL GAS OVEN.

APlfLIOATION FILED APR.22,1908.

Patented Dec. 8, 1908.

4 SHEETSSHEET 3.

1 INVENTOF Georg? B.M3e]c WITNESS s G. B. MEEK.'

PORTABLE REEL GAS OVEN.

APPLICATION FILED APR.22,1908.

Patented Dec. s, 1908.

4 SHEETS-SHEET 4.

INVEN TOH AITTOHNE YS .NIEI) STATES PATENT, orrre.

GEORGE BEVERIDGE MEEK, OF NEW YORK, N. Y,, ASSIGNOR TO.

THE .CRANDALL & oon EY "09., OF NEW ,YORK, N. Y A CORPORATIONv OF'NEWQYQRK.

' .POBT-ABLETREEL GAS-"OVEN;

Specification of Letters Patent;

Application filed April 22, 1908. Serial No; 42am.

To all whom it may concern.

Be it known that I, GEORGE BEVERIDGE MEEK, a citizen of the United States, and a resident of the city of New-York, borough of Brooklyn, in the county of Kings and State of New York, have invented*a new and-Improved Portable Reel Gas-Oven, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in baking ovens, and more par-ticu-' larly toa wall construction, whereby the oven is fori'ned of separate detachable sections which may be readily taken apart to facilitate shipment.

The object of the invention is to prevent heating of'the exterior wall by the heat of the I ac gas burners employed in the baking. com'plish this object by forming each of the walls or wall sections with an inner packing or lining of asbestos, or other suitable nonheat-conducting material, and outside of the lining of asbestos,'l provide a plurality of air ,passages or conduits, so arranged that an automatic circulation of aii is maintained.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures, and in which Figure 1 is a front elevation of an oven constructed in accordance with my invention", one corner thereof being broken away;.

Fig. 2 is a transverse section at right angles to thevie'w shown 1n F1g.1, aridtaken on the llIle 2-2 of Fig. 3; Fig. 3 1s a longitudinal section taken on the linc'il 3 of Fig. 2; Fig.-

4 is a transverse section. through one corner of the oven, said section being taken on the line 44 of Fig. 1; Fig. 5 is a transverse section through a corner adjacent the end of the door, said section being taken on the -'line 55 of Fig. 1; and Fig. 6 is a top plan view, the outer layer or covering of. sheet metal being removed.

My im roved oven may be made of any desired s a e or size,- but is preferably of such size t at each side thereof may be formed of a single section readily transported.

" As shown, the oven is substantially'rectam gular in cross section, there being provided a front section 10. a rear section 11, two end sections 12 and 13, and a top section 14. These sections are all formed in substantially the same manner, but at the edges of each, the construction is 'such that the adjacentv sections may be readilysecured togree of heat from the interior of the oven to the intermediate or partition wall 17. The space between the outer w'alllo and the partition 1 7 constitutes a space for the circulation of ai-r,-and is sub-divided to-form-a-plurality of air-conduits onpassageways"; 19.

The means for subdividing the air space preferably comprises a plurality of sheet metal channels 20, each having the base thereof rigidly secured to the outer wall 16, and having the free edges thereof lying closely adjaeent'the wall 17. These chaPnnels are spaced apart and preferably ar ranged parallel, so as to serve the double function of forming air passages and spacin the outer and intermedlate walls the desire distance apart. If desired, a thin layer of asbestos 21 may be provided at the outer surface of the wall 17, and intermediate it and the free ed es of the channels, and a secondlayer of as estos 22 ma be provided on.

the-inner surface of the wal 16 and between said wall and the channels. These two thin layers of asbestos prevent any direct conduction of the heat from the wall 17 to the wall 16.

Each section may be constructed at the edges thereof in any suitable manner, to enable it to be secured to the adjacent section to make a substantially air-tight joint. As

shown, the two end sections 12 and 13, at their vertical edges are provided'with metal reinforcing-- strips 23, which are provided with flan es riveted to the inner and outer walls, and serving ,to inclose the edge of.the asbestos-packed space between the inner wall and the intermediate one. These rein- Patented net; 8, recs.

forcing edge strips 23 are so formed that the outer or air-circulating portion of the wall extends beyond the inner or asbestos filled .section, so that when he walls are connected together, they will meet in a zigzag line rather than in a straight line, thus more effectively preventing the escape of hot air from the oven, and preventing the direct radiation of heat. The front and back walls are provided with somewhat similar edge re- I mforcmg strips 24, formed at such an angle as to fit the edges of the end wall sections,

and theyalso carry border or corner strips 25. These last-mentioned strips may be providedwith outwardly-extending lugs 26 for receiving transverse tie bolts 27, exposed upon the outer surface of the ends of the oven and rigidly holding the front and back wall sections to the end sections. The end and back sections are each provided with a plurality, of air inlet openings 28 at the lower edges thereof, there being provided-at least one opening for each channel and at least one opening for each space between adj acent channels. At the upper edges of the I same layers arranged in substantially the vertica the center an same manner as are the rear and end sections, but the asbestos portion of the top section preferably extends below the level of the top edge of the asbestos portions of the ends and rear, while the outer or air-circulating portion of the top sections extends out across the up er edges of the entire thickness of the walls. The channels between the intermediate and outer sheet metal walls may be arranged in any suitable manner,-but

The channels are preferably arranged sub stantially as shown in Fig. 6, andextend inward radially. About the periphery of the top section, there are provided a plurality of openings 30, on the under surface, which register with the openings 29 in the side and end, wall sections, and at the center the outer sheet metal wall 16 of the top communicates with the gas-escape .conduit or ipe 31. Thus the air which enters through t e openings 28 about the bottom of the oven, may pass upwardly through the channels and through the space between the channels to the openings 29, thence through the openings 30 to the air s ace of the to ,and thence to air passages, and also to permit an escape of the gases of combustion from the burners which heat the oven, the to wall carries a conduit 32, somewhat smaller than the conduit 31 and concentric therewith and terminating a short distance from the entrance to the conduit 31. The hot gases from the oven passages in the wall sections.

out thecon uit 31. To in-' crease the circulation of air through these 32, and in passing up the conduit 31 they draw with them air from the air spaces and The front wall of the oven is also for the circulation of air therethrough, but is provided with an entrance opening and a door 33, whereby access may be gained to the interior of the oven. The door is formed of inner and outer layers of sheet metal packed with asbestos, as shown in section in Fig. 2, and at each end of the door, a cord or chain 34 extends upwardly over a corresponding pulley 35, and downwardly to a counterbalancing weight than the oven, so as to leave vertical passageways'37 at the ends of the doorway, and these passageways serve the double purpose of permitting a circulation of air and a free up-anthdown movement of the weight. The door sill, that is, the lower portion of the door casing, is formed with a transverse passage 38, .which communicates at each end with the vertical passages 37, and communicates at its under side with the vertical passages within the channels and between the chan nels of that portion of the front wall section openings 39, as illustrated T below the door, by

in Figs'l and 2. 1e lowermost portion of '36. The door opening is somewhat shorter the front section is not insulated, but is formed of a single sheet metal wall'portion 40, having small doors 41 through which the burners may be examined or lighted. EX- tending across below the door is the main gas supply pipe 42, and this is provided with a plura ity of branches 43 extending across the lower portion of the oven, and each having a'fplurality of burners 44. Beneath the sets 0 burners, a perforated sheet metal pan or floor 45 may be provided, if desired. Di-

rectly above the doors 41, the outer surface of the front wall is provided with a plurality of openings 46, whereby the air may enter I the wall section beneath the main door 33.

. The material to be cooked may be sup-- ported witliin the oven in any suitable manner, but preferably upon the plans or trays 47 of areel. One end of the s aft of the reel may extend through the wall of the oven and be provided with a suitable gear wheel 48,

whereby the reel may be rotated at the de sired speed.

The entire oven may be readily taken apart for shipment, it only 'bein necessary to remove the burner pipes an "reel, and remove the end bolts 27. The parts going to-v make up each wall section are rigid in respect to one another, so thatthe separate sections may be shipped without danger of injury, and when reaching the destination, they may be very readily assembled due to their extreme simplicity.

In use, the outside surface is of no higher temperature than the, surrounding atmosphere, as the insulation and the automatic heat from passingoutwardly to the outer surface. A uniform distribution of air through the airspace is insured by the arrangement'of channels each with its own inlet and outlet openings, and the channels which form the separate passages also serve to brace the parts and secure them in the desired relationship. The escape of the hot gasesfrom the upper (portion of the chamber acts as aninjector an' all of the wall passages.

Having thus described my invention, I claim as new and desire-to secure by Letters Patent:

1. An oven having the sides thereof formed of an inner sheet metal wall, an outer sheet metal wall, an intermediate sheet metal partition, a packing of insulatin material intermediate the partition and the inner wall,

means for spacing the outer wall from the partition and subdividing' the space into a plurality of air assages', each'out of communication with't e interior of the oven-and cc :nm'vnicating with the outside atmosphere at the Wer end, and a conduit communicating with all of said passages'at the upper end.

2. An oven. having the sides thereof formed with an inner insulating section and an outer air-circulating'section, a plurality of channel members subdividing said aircirculating section into plurality of s'epa- 1 rate passages, each of which is outof communication with the interior of-theoven and Y communicates with the outside atmosphere at-the lower end, and means communicating with each of said passages at the upper end for creating a forcedair circulation.

. :3. An oven having the sides thereof pro-- videdwith vertical -disposed air passages, each of which communicates with the outside atmosphere at its lower end, a top provided with a plurality of'radially-disposed passages communicating. with said verticallyrdisposed passages, a conduitcommunicating with all of said radially-disposed passages, and 'a gas escape conduit leading from the interior of the oven and terminating within sald condraws the air, through duit, to serve as an ejector to draw air through said passages.

4. An oven having a front wall provided with a vertically-sliding door, a plurality of vertically-disposed air passages within the wall below said door, and each communicatend, a transverse passa e beneath said door and communicating wit all of said passages at the upper ends thereof, vertically-disposed passages adjacent the ends of said door and communicating with said transverse passage, a conduit-having communicationwith each of said side passages, and weights for counter for thepassages in said top.

6. An oven having a front wall provided with afdoor, a plurality of vertically-dis osed air passages within the wall below sai door and. each communicating, with the outside atmosphere at itslower end,- a transverse assage beneath-said door and communicat mg with all of said passages at the upper ends cent the ends of said oor and communicating with said transverse. passage, and an outlet having communication with'eacll of said side passages. v In testimony whereof I have signed my. name to this specification in the presence of two-subscribin witnesses. GEOR .E BEVERIDGE MEEK.

Witnesses W. C. PETTEE,

. W. S. GRIES'.

ing with the outside atmosphere at its lower at their upper ends, and a-gas escape conduit thereof, vertically-dis osed passages adja- 

